Active Autowerke BMW B58N X5-40i X3-40i X7-40i 540i 640i 740i AFlow Catted Downpipe (2025 and newer) 435I com under Engine Electrical System

com under Engine Electrical System to confirm which DME you have or call us if you are unsure

Every Active Autowerke F8X Rear Exhaust Section is test-fitted on our in-house F8X Exhaust Fixture as part of our quality control measures

5" ultra high flow GESI catalytic converter that will NOT produce a CEL

With past tuning tools

These ultra high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems

Active Autowerke BMW B58N X5-40i X3-40i X7-40i 540i 640i 740i AFlow Catted Downpipe (2025 and newer) 435I com under Engine Electrical SystemNO PERFORMANCE TUNE NEEDED. Active Autowerke BMW B58N Gen 3 Catted Downpipe this is not for M340 and M440 B58N Gen 3 which also incorporates a new GPF into the downpipe. NOTE: Fitment applies to US model cars only unless specifically stated. We cannot guarantee fitment to non US model cars. BMW introduced a new valvetronic, single turbo version of its direct injection engine for the later F Chassis models beginning in 2016 and carried over to the G